

#find
# s = 'hello world'
# print(s.find('hello'))
# print(s.find('worldd'))
#s = 'python ,helloworld,java,php'
# print(s.find('h'))
# print(s.find('h',4))

# print(s.index('world'))
# print(s.index('worldd'))

a = 'hello '
print(a.rstrip())

